%0 Journal Article
%T First observation of the decay B-0 -> D-0(D)over-bar(0)K(+)pi(-)
%A LHCb Collaboration (Aaij, R. et al
%A Garcia Martin, L. M.
%A Henry, L.
%A Jashal, B. K.
%A Martinez-Vidal, F.
%A Oyanguren, A.
%A Remon Alepuz, C.
%A Ruiz Vidal, J.
%A Sanchez Mayordomo, C.
%J Physical Review D
%D 2020
%V 102
%N 5
%I Amer Physical Soc
%@ 1550-7998
%G English
%F LHCbCollaborationAaij_etal2020
%O WOS:000571653500001
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4537), last updated on Wed, 07 Oct 2020 09:08:05 +0000
%X The first observation of the decay B-0 -> D-0(D) over bar K-0(+)pi(-) is reported using proton-proton collision data corresponding to an integrated luminosity of 4.7 fb(-1) collected by the LHCb experiment in 2011, 2012 and 2016. The measurement is performed in the full kinematically allowed range of the decay outside of the D*(-) region. The ratio of the branching fraction relative to that of the control channel B-0 -> D-0<(DK+)-K-0 pi(-)+ is measured to be R = (14.2 +/- 1.1 +/- 1.0)%, where the first uncertainty is statistical and the second is systematic. The absolute branching fraction of B-0 -> D-0(D) over bar K-0(+)pi(- )decays is thus determined to be B(B-0 -> D-0(D) over bar K-0(+)pi(-)) = (3.50 +/- 0.27 +/- 0.26 +/- 0.30) x 10(-4), where the third uncertainty is due to the branching fraction of the control channel. This decay mode is expected to provide insights to spectroscopy and the charm-loop contributions in rare semileptonic decays.
%R 10.1103/PhysRevD.102.051102
%U https://arxiv.org/abs/2007.04280
%U https://doi.org/10.1103/PhysRevD.102.051102
%P 051102-11pp